What is the sems screws
What is the sems screws?
The main difference between the sems screw and the other screw is that it is equipped with one more spring washer or one more flat washer than the other screw, or it is a three-component assembly, with one more spring flat washer.
This is the main difference between the appearance of sems and other screws.
In addition to the obvious difference in appearance between sems screws and ordinary screws, the main difference is the difference in mechanical properties and uses.
The sems screw is a three-assembly or two-assembly with a spring flat washer. Of course, it is a common screw with a spring flat washer. If the elastic flat pad is fitted, the elastic flat pad will not fall off. Fastened to form an assembly. In terms of mechanical performance, the sems screw is a combination of three accessories, and in terms of performance, it must be three fasteners to work together.
More convenient, the biggest advantage of the combined screw,sems screw is that the production line can be operated conveniently and quickly, and the work efficiency can be improved.